As soon as I posted a reply to the introduction to solids question, I saw the other responses (I get Lactnet as a daily digest, not as individual emails) and realized mine had nothing new to offer, everything I said had already been said by others, and better, too! So I apologize for the redundancy... Kerry McIlvenna-Davis *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome